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SUCCESS STORY
Rayong, Thailand
2010
2011
LNG Chain
Executive Summary
Natural gas is Thailand’s primary fuel source and is absolutely essential to the country’s industries, particularly the power
sector: two third’s of the country’s electricity is generated at gas-fired power plants. Much of Thailand’s natural gas comes
from gas fields in the Gulf of Thailand. It is transported throughout the country via a network of offshore and onshore pipelines
built by the national gas and oil company, PTT Public Company Limited (PTT PCL). In 2005, due to economic growth and the
resulting shortfall in the supply of natural gas, the country’s National Energy Policy Board resolved to begin importing LNG.
In anticipation of this policy shift, PTT PCL established PTT LNG Company Limited (PTTLNG) in 2004 and tasked it with
building and operating the country’s first LNG import terminal at Map Ta Phut, a deepwater port 220 km southeast of
Bangkok. They send out gas to the adjacent Map Ta Phut industrial estate, which is one of Thailand’s most important
industrial areas and home to a number of petrochemical, oil refining, steel, and fertilizer plants. Gas also be transported via
the PTT pipeline system to power companies and other important industrial customers throughout the country.
Construction of the first terminal commenced in early 2008 and was completed in 2011, and the terminal began commercial
operation later that year when it received its first shipment of LNG from Qatar. This terminal includes a jetty capable of
receiving LNG carriers with capacities up to 264,000 m3, two 160,000 m3 full containment LNG tanks, a 5 million ton/year
regasification (vaporizer) train, a boil-off gas recondensor, a sendout station, and an LNG pump.
To control key terminal facilities, PTTLNG went with a Yokogawa solution consisting of the CENTUM VP production control
system, ProSafe-RS safety instrumented system, OmegaLand operator training system (OTS), asset management package
- Plant Resource Manager (PRM), and F
OUNDATION fieldbus field digital technology. Work on this project was executed by
Yokogawa, which functioned as main automation contractor (MAC).
DCS, SIS, PRM, FOUNDATION™ fieldbus instruments, and OTS
Installed at Thailand’s First LNG Terminal
PTT LNG terminal overview
ISD-SP-R180
All Rights Reserved, Copyright © 2009, Yokogawa Electric Corporation
SUCCESS STORY
The Challenges and the Solutions
1. Safe, uninterrupted operations
Customers all over the country rely on receiving a regular supply of gas from this LNG import terminal, which operates 24/7.
It is thus absolutely essential to prevent any shutdowns or other problems that would interrupt this supply. A key asset that
makes this possible is the OmegaLand OTS. In preparation for the arrival of each LNG carrier, operators in the central control
room (CCR) run simulations of all key terminal processes such as offloading and regasification on the OTS. This reduces the
likelihood of any mistakes and ensures smooth and safe terminal operations.
While configuring this fully integrated control system solution for PTTLNG, Yokogawa strictly followed the following safety
standards:
- NFPA59A (National Fire Protection Association) standard on production, storage, and handling of LNG
- EN1473 (European Norm) standard on onshore installation and equipment design for LNG
- SIGTTO (Society of International Gas Tanker and Terminal Operations Limited) operating standard and best practices for
gas tanker and terminal operations
Once all personnel are all fully trained and gain sufficient experience in operating this terminal, the plan is for it to operate with
just six personnel on each 12 hour shift: one supervisor, one board operator, and four field operators.
2. Asset maximization
The transmitters, flowmeters, and control valves throughout this terminal are all F
OUNDATION fieldbus enabled and can be
continually monitored using the PRM solution. Alarms are issued before any device fails completely, enabling predictive
maintenance that reduces maintenance costs throughout the facility lifecycle. The complete integration of all systems
including those at the jetty substation, laboratory, fire station, and truck loading administration room as well as 10 other
subsystems via Modbus communications allows operators at the CENTUM human interface stations (HIS) in the CCR
complete real-time access to information on operations throughout the terminal. This ensures that they have all the
information needed to make the right decisions at the right time. PTTLNG is thus able to make maximum use of all of this
terminal’s assets.
Central control room